<template>
    <div>
     <!-- 面包屑导航区 -->
     <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
     <!-- 卡片视图 -->
     <el-card>
         <el-row>
             <el-col>
                <el-button type="primary">添加角色</el-button>
             </el-col>
         </el-row>
         <!-- 角色区域列表 -->
          <el-table :data="rolesList" border stripe hit>
              <!-- 展开列 -->
               <el-table-column type="expand"  width="50">
                   <template slot-scope="scope">
                     <el-row  v-for="(item1, i1) of  scope.row.children" :key="item1.id"  :class="[i1===0? 'eltop':'','elbot','vcenter']">
                        <!-- 渲染一级权限 -->
                        <el-col :span="5">
                            <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                             <i class="el-icon-caret-right"></i>
                          
                         </el-col>
                        <!-- 渲染二级和三级权限 -->
                        <el-col :span="19">
                            <el-row v-for="(item2,i2) of item1.children" :key="item2.id" :class="[i2===0? '':'eltop','vcenter']">
                                <!-- 二级 -->
                                <el-col :span="6">
                                     <el-tag type="success" closable  @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                                     <i class="el-icon-caret-right"></i>
                                </el-col>
                                <!-- 三级 -->
                                 <el-col :span="18" >
                                     
                                           <el-tag type="warning"  v-for="(item3) of item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                                 </el-col>
                            </el-row>
                        </el-col>
                   </el-row>
                   </template>
                   
               </el-table-column>
              <!-- 索引列 -->
              <el-table-column label="#" type="index" width="50"></el-table-column>
              <el-table-column label="角色名称"  prop="roleName" width="250"></el-table-column>
              <el-table-column label="角色描述"  prop="roleDesc" width="250"></el-table-column>
               <el-table-column label="操作" width="300">
                    <template slot-scope="scope">
                      <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
                      <el-button  size="mini" type="danger" icon="el-icon-delete">删除</el-button>
                      <el-button  size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                    </template>
               </el-table-column>
         </el-table>
     </el-card>

     <!--分配权限的对话框 -->
<el-dialog
  title="分配权限"
  :visible.sync="SetRightDialogVisible"
  width="50%"
  @close="setRightDialogClosed"
 >
  <!-- 树形控件 -->
  <el-tree :data="rightsList" :props="treeProps" show-checkbox node-key="id" default-expand-all highlight-current :default-checked-keys="defKeys" ref="treeRef"></el-tree>

  <span slot="footer" class="dialog-footer">
      <el-button @click="SetRightDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>
<script>
export default {
  data() {
    return {
      // 所有角色列表数据
      rolesList: [],
      // 控制分配权限对话框的显示与隐藏
      SetRightDialogVisible: false,
      // 所有权限的数据
      rightsList: [],
      // 树形控件的属性绑定
      treeProps: {
        children: "children",
        label: "authName"
      },
      // 默认选中的节点Id值数组
      defKeys: [],
      //当前即将分配权限的角色id
      roleId:''
    };
  },
created() {
    this.getRolesList();
  },
  methods: {
    async getRolesList() {
      const { data: result } = await this.axios.get("roles");
      console.log(result.data);
      if (result.meta.status !== 200) {
        return this.$message.error("获取角色列表失败！");
      }
      this.rolesList = result.data;
    },
    //根据id删除对应的权限
    async removeRightById(role, rightId) {
      // 弹窗提示用户是否要删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该文件, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);
      //   console.log(confirmResult)
      if (confirmResult !== "confirm")
        return this.$message.info("取消了删除！");
      const { data: res } = await this.axios.delete(
        `roles/${role.id}/rights/${rightId}`
      );
      console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error("删除用户权限失败！");
      }
      this.$message.success("删除用户权限成功！");
      role.children = res.data;
    },
    //    展示分配权限的对话框
    async showSetRightDialog(role) {
        this.roleId=role.id
      // 获取所有权限数据
      const { data: res } = await this.axios.get("rights/tree");
      if (res.meta.status !== 200) {
        return this.$message.error("获取权限数据失败！");
      }
      // 获取到的权限数据
      this.rightsList = res.data;
      console.log(this.rightsList);
      //   this.getRolesList()
      // 递归获取三级节点的id
      this.getLeafKeys(role, this.defKeys);

      this.SetRightDialogVisible = true;
    },
    // 通过递归的形式，获取角色下所有三级权限的id，并保存到dekeys 数组中
 getLeafKeys(node, arr) {
    // 如果当前 node 节点不包含 children 属性，则是三级节点
    if (!node.children) {
      return arr.push(node.id);
    }

    node.children.forEach(item => this.getLeafKeys(item, arr));
 },
    // 监听分配权限对话框的关闭事件
 setRightDialogClosed(){
     this.defKeys=[]
 },
   //点击为角色分配权限
  async allotRights(){
     const keys = [...this.$refs.treeRef.getCheckedKeys(),...this.$refs.treeRef.getCheckedNodes()]
     const idStr = keys.join(',')

    const {data:res}= await this.axios.post(`roles/${this.roleId}/rights`,{rids:idStr})
         if(res.meta.status!==200) return this.$message.error('分配权限失败！')

         this.$message.success('分配权限成功！')
         this.getRolesList()
         this.SetRightDialogVisible=false
     
  } 
  
   
},
  

};
</script>

<style scoped>
.el-card {
  margin-top: 15px;
}
.el-tag {
  margin-bottom: 7px;
}
.eltop {
  border-top: 1px #999 solid;
}
.elbot {
  border-bottom: 1px solid #999;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
